A Question to Start

Dear community,

Is there any way you could provide me a “hello world” kind of code and a few pointers to what IDE and environment setting should I try in order to tweek a little bit some development on Harmony? I would like to get started to see whether I could further contribute in the future. Currently, I own quite a lot of ONE and I would like to go past being only a retail investor to someone that really have some experience on DAO for Harmony and to have a more concrete idea of the bottlenecks.

Thank you so much in advance,